One problem related to dashboard failed has been reported for the 2021 Chevrolet Silverado 3500. The most recently reported issues are listed below.
The new gm 2021 trailer lighting module and/or system is defective. It fails a pre-connection test with tester, gives "check trailer wiring" warning on dash without a trailer connected and turns off any trailer lighting connected without warning on the road, without blowing a fuse. This problem is much like the TSB report #20-na-198 for earlier models. This issue was addressed by the dealer by replacing the module, but the problem has re-occurred while on the road causing a road safety issue (no trailer lighting), some times without warning. The dealer doesn't know what else to do at this point.
| Electrical System problems | |
| Dashboard Failed problems |